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An extremely common regex task is extracting a streak of text between two strings, or between two patterns. Before you start conjuring a regular expression for your scenario, consider answering the following questions: What are your expected match boundaries? In other words, what are the left- and right-hand delimiters? When a match should start? When should it end or where should it stop? If you ...
Extracting Text between Two Strings with Regular Expressions
Feb 06, 2021
164 views
Whenever you decide to build a regular expression with the help of an online regular expression testing Web site, you should bear in mind that regex engines differ. Selecting the right regex flavor is crucial to avoid frustration. Imagine you are writing a regex in Go language, and select the PCRE regex flavor. The resulting (?<!\d)\.(?!\d) pattern works fine for you online, but Go code refuses...
Using online regular expression testers
Dec 13, 2020
27 views
Welcome, regex User! I am regularly asked at StackOverflow how I learnt to use regular expressions. You might be curious about that, too, so I decided to share my regex "road so far". I learnt about regular expressions in 2009, when I was working for a localization company that used a CAR (Computer-Aided Revision) tool to check translation quality. Most of the checks were implemented as regular ex...
My Regex "Road-So-Far"
Nov 28, 2020
49 views